Vivora Luno Premium Ergonomic Sitting Ball Chair, Felt, Max Size (25 to 26 inches), for Home Offices, Balance Training, Yoga Ball, Posture Improvement

Enjoying my purchase so far. Inflation wasn’t difficult when the enclosed instructions were followed. I bought the larger size to accommodate my 6’ height and found that I need to have it not quite fully inflated to use at a comfortable height at my desk, even with an elevated monitor. However, being able to bounce a bit helps at that 3p afternoon slump time!

Having used a yoga ball as my desk chair for the last 10+ years I was ready for an upgrade. The Max size is the same size as my 75mm yoga ball. The fabric and seams look good. Time will tell how it holds up.

This is a beautifully constructed ergonomic ball that makes sitting with a sore back a pleasure. It reduces pain in all the triggerpoints, and encourages good posture! I have used these before but there is not one like this with a beautiful cover that creates stability in the ball and takes the use of it to another level. It is really pretty to look at it is a great relief to a sore back!

Fully inflated and the outter case too big.

Edit: customer service got back to me quickly. Apparently I had an older model with a ball that was too big for the cover, putting too much pressure on the seams and zipper. They've offered to replace it for me, so I bumped it up to 4 stars for now. We'll see how the new one works out!Original review:I've had this medicine ball for a little over a year now. I liked the way it was designed, that ring around the bottom helps its stay upright when you're not on it, but isn't so big that it impedes movement when you are sitting on it. I tend to bounce a little and move around to keep my lower back lose. In that regard, this chair has been a great help for me.Inflating it can be tricky. They do have a video on their website that will walk you through it, but it could certainly stand to be a little more concise, it's quite long. The real reason I came here to review was that the zipper failed this morning. The mechanism departed the zipper in dramatic fashion, shooting across the room, and the zipper itself ripped apart. It seems like it could afford to be a little stronger. A user bouncing gently on the ball throughout the day should definitely be taken into consideration, it's the whole reason why this ball is good for your back. We'll see what customer service says...

I've used an exercise ball as a chair for many years and am very happy to find this one with a cover. It's very comfortable. . . . As with all exercise balls, it's best to have an electric air compressor for filling it.